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Masanori Furukawa,Akira Mitoro,Takahiro Ozutumi,Yukihisa Fujinaga,Keisuke Nakanishi,Koh Kitagawa,Soichiro Saikawa,Sinya Sato,Yasuhiko Sawada,Hiroaki Takaya,Kosuke Kaji,Hideto Kawaratani,Tadashi Namisa 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.3
Background/Aims: Endoscopic resection (ER) for superficial non-ampullary duodenal epithelial tumors (SNADETs) is challenging. Conventional endoscopic mucosal resection (CEMR) is also problematic due to the anatomical features of the duodenum. Wecompared the safety and efficacy of underwater endoscopic mucosal resection (UEMR) with those of CEMR through a retrospectiveanalysis. Methods: Altogether, 44 consecutive patients with 46 SNADETs underwent ER (18 CEMR cases and 28 UEMR cases) betweenJanuary 2016 and October 2019. We investigated the proportions of en bloc resection, R0 resection, complications, resection time,and total procedure time and compared the outcomes of patients from the CEMR group with those of patients from the UEMRgroup. Results: The median tumor size was 8.0 mm (range, 2.0–20.0 mm). The UEMR group showed a higher proportion of en blocresection (96.4% vs. 72.2%, p<0.05) and significantly lower median resection time and total procedure time (4 min vs. 9.5 min,p<0.05 and 13 min vs. 19 min, p<0.05; respectively) than the CEMR group. No complications were observed. However, two patientstreated with piecemeal resection in the CEMR group had residual tumors. Conclusions: UEMR is a feasible therapeutic option for SNADETs. It can be recommended as a standard treatment.
A Consideration on Block LMS-Newton Algorithm and Its Performance
Kimoto, Masanori,Furukawa, Toshihiro 대한전자공학회 1994 ISPACS:Intelligent Signal Processing and Communica Vol.1 No.1
Adaptive algorithm especially play the important role in adaptive signal processing, and various techniques has been proposed until up to now. Among there, LMS-Newton algorithm as well known. LMS-Newton algorithm can have rapid convergence speed no matter how input signal are correlated But it has too many computational requirements to be implemented with hardware structure. This paper presents a Block LMS-Newton algorithm, it is derived by introducing the block adaptive signal processing to LMS-Newton algorithm. Compared with LMS-Newton algorithm, the proposed algorithm is expected to reduce the computational requirements and fast convergence speed.
Mukae Yosuke,Furukawa Kojiro,Noguchi Ryo,Oda Yoshimasa,Furutachi Akira,Takamatsu Masanori,Itoh Manabu,Kamohara Keiji,Morita Shigeki,Nishida Takahiro 경희대학교 융합한의과학연구소 2021 Oriental Pharmacy and Experimental Medicine Vol.21 No.2
Daikenchuto (TJ-100) is a Japanese traditional herbal medicine that enhances postoperative enterokinesis and increases the intestinal blood flow. Daikenchuto has historically played a positive role in the perioperative management of gastrointestinal surgery. However, the effect of Daikenchuto on improving nutrition after cardiac operation has never been reported. This study evaluated the effect of Daikenchuto administration after cardiac operation. Eighty-four patients who underwent isolated first aortic valve replacement (AVR) at our department from May 2008 to December 2014 were enrolled in this study and retrospectively examined. We administered Daikenchuto when patients started their water intake. Blood tests were performed before and seven days after AVR. We prescribed Daikenchuto for 21 patients (group D). The reductions in the albumin level and prognostic nutritional index (p = 0.045, p = 0.008, respectively, multivariate analysis of variance) after the operation were significantly lower in group D (3.75 ± 0.3 to 3.33 ± 0.4 and 44.7 ± 4.8 to 41.3 ± 6.7 mg/dl, respectively) than in the group without Daikenchuto (group N, 63 patients) (3.74 ± 0.5 to 3.13 ± 0.4 and 44.6 ± 6.3 to 37.7 ± 5.3 mg/dl, respectively). There were no significant differences in the incidence rates of postoperative complications or hospitalization duration between the two groups. Postoperative Daikenchuto administration is considered to be safe and effective for improving the postoperative nutritional status after simple AVR as well as digestive surgery.
Shinya Sato,Kei Moriya,Masanori Furukawa,Soichiro Saikawa,Tadashi Namisaki,Mitsuteru Kitade,Hideto Kawaratani,Kosuke Kaji,Hiroaki Takaya,Naotaka Shimozato,Yasuhiko Sawada,Kenichiro Seki,Koh Kitagawa,T 대한간학회 2019 Clinical and Molecular Hepatology(대한간학회지) Vol.25 No.1
Background/Aims: L-carnitine not only alleviates hyperammonemia and reduces muscle cramps in patients with liver cirrhosis, but also improves anemia in patients with chronic hepatitis and renal dysfunction. This study prospectively evaluated the preventative efficacy of L-carnitine supplementation against hemolytic anemia during antiviral treatment using ribavirin in patients with hepatitis C virus (HCV)-related chronic liver disease. Methods: A total of 41 patients with chronic hepatitis were consecutively enrolled in this study. Group A (n=22) received sofosbuvir plus ribavirin for 3 months, whereas group B (n=19) was treated with sofosbuvir, ribavirin, and L-carnitine. Hemoglobin concentration changes, the effects of antiviral treatment, and the health status of patients were analyzed using short form-8 questionnaires. Results: A significantly smaller decrease in hemoglobin concentration was observed in group B compared to group A at every time point. Moreover, the prescribed dose intensity of ribavirin in group B was higher than that of group A, resulting in a higher ratio of sustained virological response (SVR) 24 in group B compared with group A. The physical function of patients in group B was also significantly improved compared to group A at the end of antiviral treatment. Conclusions: L-carnitine supplementation alleviates ribavirin-induced hemolytic anemia in patients with HCV and helps relieve the physical burden of treatment with ribavirin-containing regimens. These advantages significantly increase the likelihood of achieving SVR.
Kei Moriya,Tadashi Namisaki,Shinya Sato,Masanori Furukawa,Akitoshi Douhara,Hideto Kawaratani,Kosuke Kaji,Naotaka Shimozato,Yasuhiko Sawada,Soichiro Saikawa,Hiroaki Takaya,Koh Kitagawa,Takemi Akahane,A 대한간학회 2019 Clinical and Molecular Hepatology(대한간학회지) Vol.25 No.4
Background/Aims: We previously reported the comparable efficacy of bi-monthly hepatic arterial infusion chemotherapy (B-HAIC) to that of sorafenib chemotherapy for the treatment of advanced hepatocellular carcinoma (aHCC) in patients with compensated cirrhosis. In this study, we demonstrate the efficacy of B-HAIC in patients with decompensated cirrhosis. Methods: Forty-five patients with aHCC refractory to transcatheter arterial chemo-embolization (TACE) were treated with B-HAIC and were divided into two groups according to hepatic functional reserve (Child-Pugh grade). Overall survival period, treatment response, and adverse events in each group were analyzed. Results: Efficacy and disease control rates in the Child-Pugh B group (n=24; 21% and 71%, respectively) were not significantly impaired compared the Child-Pugh A group (n=21; 38% and 67%, respectively). Median survival time and survival rate at 12 months in the Child-Pugh B group were 422 days and 58.3%, respectively, whereas those in the Child- Pugh A group were 567 days and 70.8%, respectively. Importantly, the hepatic functional reserve of patients did not worsen in either group during the treatment period. Furthermore, the occurrence rate of adverse events leading to discontinuation of anti-tumor treatment was not significantly increased in the Child-Pugh B group. Conclusions: Given the preservation of hepatic functional reserve afforded by B-HAIC chemotherapy in patients with decompensated cirrhosis, B-HAIC might be an acceptable alternative strategy for aHCC patients who do not respond to TACE.
Ascochlorin activates p53 in a manner distinct from DNA damaging agents
Jeong, Ji-Hak,Nakajima, Hiroo,Magae, Junji,Furukawa, Chiharu,Taki, Keiko,Otsuka, Kensuke,Tomita, Masanori,Lee, In-Seon,Kim, Cheorl-Ho,Chang, Hyeun-Wook,Min, Kwan-Sik,Park, Kwang-Kyun,Park, Kwan-Kyu,Ch Wiley Subscription Services, Inc., A Wiley Company 2009 International journal of cancer: Journal internati Vol.124 No.12
<P>Ascochlorin, a prenylphenol antitumor antibiotic, profoundly increases the expression of endogenous p53 by increasing protein stability in the human osteosarcoma cells and human colon cancer cells. Ascochlorin also increases DNA binding activity to the p53 consensus sequence in nuclear extract and enhances transcription of p53 downstream targets. Ascochlorin specifically induces p53 phosphorylation at ser 392 without affecting ser 15 or 20, whereas DNA damaging agents typically phosphorylate these serines. Moreover, ascochlorin does not induce phosphorylation of ATM and CHK1, an established substrate of ATR that is activated by genotoxins, nor does it increase DNA strand break, as confirmed by comet assay. The structure-activity relationship suggests that p53 activation by ascochlorin is related to inhibition of mitochondrial respiration, which is further supported by the observation that respiratory inhibitors activate p53 in a manner similar to ascochlorin. These results suggest that ascochlorin, through the inhibition of mitochondrial respiration, activates p53 through a mechanism distinct from genotoxins. © 2009 UICC</P>
Koh Kitagawa,Akira Mitoro,Takahiro Ozutsumi,Masanori Furukawa,Yukihisa Fujinaga,Kenichiro Seki,Norihisa Nishimura,Yasuhiko Sawada,Kosuke Kaji,Hideto Kawaratani,Hiroaki Takaya,Kei Moriya,Tadashi Namisa 대한소화기내시경학회 2022 Clinical Endoscopy Vol.55 No.3
Background/Aims: Covered self-expandable metallic stents (CMSs) are widely used for malignant distal biliary obstructions (MDBOs)caused by pancreatic carcinoma. This study compared the efficacy and safety of the laser-cut-type and braided-type CMSs. Methods: To palliate MDBOs caused by pancreatic carcinoma, the laser-cut-type CMSs was used from April 2014 to March 2017, andthe braided-type CMSs was used from April 2017 to March 2019. The tested self-expandable metallic stents were equipped with differentanti-migration systems. Results: In total, 47 patients received CMSs for MDBOs (24 laser-cut type, 23 braided-type). The time to recurrent biliary obstruction(TRBO) was significantly longer in the braided-type CMSs (p=0.0008), and the median time to stent dysfunction or patient death was141 and 265 days in the laser-cut-type CMSs and braided-type CMSs, respectively (p=0.0023). Stent migration was the major cause ofstent dysfunction in both groups, which occurred in 37.5% of the laser-cut-type CMSs and 13.0% of the braided-type CMSs. Therewere no differences in the survival duration between the groups. Conclusions: The TRBO was significantly longer for the braided-type CMSs with an anti-migration system than for the laser-cut-type. Stent migration tended to be less frequent with the braided-type CMSs than with the laser-cut-type CMSs.
Life Science : Ascochlorin activates p53 in a manner distinct from DNA damaging agents
( Ji Hak Jeong ),( Hiroo Nakajima ),( Junji Magae ),( Chiharu Furukawa ),( Keiko Taki ),( Kensuke Otsuka ),( Masanori Tomita ),( In Seon Lee ),( Cheorl Ho Kim ),( Hyeun Wook Chang ),( Kwan Sik Min ),( 영남대학교 약품개발연구소 2009 영남대학교 약품개발연구소 연구업적집 Vol.19 No.-